论文标题
$ \ varepsilon'/\ varepsilon $在标准模型及以后：2021
$\varepsilon'/\varepsilon$ in the Standard Model and Beyond: 2021
论文作者
论文摘要
总结了标准模型（SM）中比率$ \ varepsilon'/\ varepsilon $的当前状态。特别是，我们强调了试图计算$ \ varepsilon'/\ varepsilon $的三种方法之间的差异：晶格QCD，dual QCD和手性扰动理论。由于目前还有一个重要的新物理（NP）贡献剩下的重要空间，因此我们总结了最近开发的技术的现状，目的是分析$ \ varepsilon'/\ varepsilon $及其与弱有效理论（wit）和标准模型有效现场理论（SMEFT）中其他可观察到的相关性（SMEFT）。我们还对$ΔI= 1/2 $规则背后的主要动态的解释发表了一些评论。
The present status of the ratio $\varepsilon'/\varepsilon$ in the Standard Model (SM) is summarized. In particular we stress the differences between three approaches that attempt to calculate $\varepsilon'/\varepsilon$ within the SM: Lattice QCD, Dual QCD and Chiral Perturbation Theory. As presently there is still a significant room left for new physics (NP) contributions, we summarize the present status of the technology that has been recently developed with the goal to analyze $\varepsilon'/\varepsilon$ and its correlations with other observables within the Weak Effective Theory (WET) and the Standard Model Effective Field Theory (SMEFT). We also make a few comments on the interpretation of the main dynamics behind the $ΔI=1/2$ rule in $K\toππ$ decays.
